The Lange 1 Perpetual Calendar in platinum measures 41.9mm x 12.9mm,
link powered by the automatic caliber
link L021. 621 components, including 63 jewels; 50-hour power reserve; instantaneous calendar jump; 21,600 beats per hour. Price on request. For more information, visit A. Lange &
link Sohne. The Hodinkee Shop sells a variety of pre-owned Lange watches; view the entire collection here.